US20240110624A1 - Control device - Google Patents
Control device Download PDFInfo
- Publication number
- US20240110624A1 US20240110624A1 US18/264,650 US202218264650A US2024110624A1 US 20240110624 A1 US20240110624 A1 US 20240110624A1 US 202218264650 A US202218264650 A US 202218264650A US 2024110624 A1 US2024110624 A1 US 2024110624A1
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- United States
- Prior art keywords
- oil passage
- case
- tubular member
- tubular
- insertion hole
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
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- 238000004891 communication Methods 0.000 claims abstract description 6
- 239000003921 oil Substances 0.000 claims description 183
- 239000010687 lubricating oil Substances 0.000 claims description 41
- 230000005540 biological transmission Effects 0.000 claims description 28
- 230000000149 penetrating effect Effects 0.000 claims description 5
- 238000003825 pressing Methods 0.000 claims description 2
- 238000003780 insertion Methods 0.000 description 83
- 230000037431 insertion Effects 0.000 description 83
- 238000010586 diagram Methods 0.000 description 37
- 238000007789 sealing Methods 0.000 description 8
- 230000008878 coupling Effects 0.000 description 7
- 238000010168 coupling process Methods 0.000 description 7
- 238000005859 coupling reaction Methods 0.000 description 7
- 230000004048 modification Effects 0.000 description 5
- 238000012986 modification Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 238000005304 joining Methods 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000002347 injection Methods 0.000 description 3
- 239000007924 injection Substances 0.000 description 3
- 238000004804 winding Methods 0.000 description 3
- 238000005266 casting Methods 0.000 description 2
- 238000006073 displacement reaction Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002093 peripheral effect Effects 0.000 description 2
- 230000004308 accommodation Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
Images
Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/048—Type of gearings to be lubricated, cooled or heated
- F16H57/0487—Friction gearings
- F16H57/0489—Friction gearings with endless flexible members, e.g. belt CVTs
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/02—Gearboxes; Mounting gearing therein
- F16H57/035—Gearboxes for gearing with endless flexible members
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0423—Lubricant guiding means mounted or supported on the casing, e.g. shields or baffles for collecting lubricant, tubes or pipes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/042—Guidance of lubricant
- F16H57/0421—Guidance of lubricant on or within the casing, e.g. shields or baffles for collecting lubricant, tubes, pipes, grooves, channels or the like
- F16H57/0424—Lubricant guiding means in the wall of or integrated with the casing, e.g. grooves, channels, holes
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0434—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control
- F16H57/0445—Features relating to lubrication or cooling or heating relating to lubrication supply, e.g. pumps ; Pressure control for supply of different gearbox casings or sections
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
- F16H—GEARING
- F16H57/00—General details of gearing
- F16H57/04—Features relating to lubrication or cooling or heating
- F16H57/0457—Splash lubrication
Definitions
- the present invention relates to a hydraulic actuation device.
- Patent Literature 1 describes a chain guide provided in a chain continuously variable transmission, which is a hydraulic actuation device.
- the chain guide is attached to a case via a support member.
- a plurality of oil passages are formed in this type of case.
- a part of the oil passage is open to the case.
- An opening of the oil passage is sealed by a sealing member.
- a hydraulic actuation device includes:
- the oil passage has an opening portion that allows the oil passage to communicate with a space inside the case,
- an increase in the number of components can be reduced.
- FIG. 1 is a diagram illustrating a continuously variable transmission according to the present embodiment.
- FIG. 2 is a diagram illustrating a case.
- FIG. 3 is a diagram illustrating the case.
- FIG. 4 is a diagram illustrating the case.
- FIG. 5 is a diagram illustrating an arrangement of chain guides in a variator.
- FIG. 6 is a diagram illustrating the chain guide.
- FIG. 7 is a diagram illustrating a tubular member.
- FIG. 8 is a diagram illustrating the tubular member.
- FIG. 9 is a diagram illustrating the tubular member.
- FIG. 10 is a diagram illustrating an arrangement of tubular members.
- FIG. 11 is a diagram illustrating a rib.
- FIG. 12 is a diagram illustrating an in-case oil passage.
- FIG. 13 is a diagram illustrating the in-case oil passage.
- FIG. 14 is a diagram illustrating a continuously variable transmission according to a modification.
- FIG. 1 is a diagram illustrating a continuously variable transmission 1 .
- a rotational driving force of an engine (not illustrated) is input to a variator 4 via a torque converter 2 and a forward and reverse switching mechanism 3 .
- the rotational driving force is transmitted to a driving wheel (not illustrated) via a reduction gear 5 and a differential device 6 after being shifted by the variator 4 .
- the variator 4 includes a pair of pulleys (a primary pulley 41 and a secondary pulley 42 ) and a chain 43 wound around the pair of pulleys.
- the chain 43 is an endless annular member in which a plurality of link plates (not illustrated) are coupled by rocker pins (not illustrated).
- the primary pulley 41 and the secondary pulley 42 are provided rotatably about rotation axes X 1 and X 2 that are parallel to each other.
- the primary pulley 41 includes a fixed pulley 411 , and a movable pulley 415 that can be displaced in a direction of the rotation axis X 1 .
- the fixed pulley 411 and the movable pulley 415 respectively include sheave portions 412 and 416 both extending in a radial direction of the rotation axis X 1 .
- the sheave portions 412 and 416 respectively have sheave surfaces 412 a and 416 a facing each other.
- the sheave surfaces 412 a and 416 a are inclined with respect to the rotation axis X 1 .
- a V groove around which the chain 43 is wound is provided between the sheave surfaces 412 a and 416 a.
- a groove width of the V groove is changed by the displacement of the movable pulley 415 in the direction of the rotation axis X 1 , and a winding radius of the chain 43 in the primary pulley 41 is changed.
- the secondary pulley 42 also includes a fixed pulley 421 , and a movable pulley 425 that can be displaced in a direction of the rotation axis X 2 .
- the fixed pulley 421 and the movable pulley 425 respectively include sheave portions 422 and 426 each extending in a radial direction of the rotation axis X 2 .
- the sheave portions 422 and 426 respectively have sheave surfaces 422 a and 426 a facing each other.
- the sheave surfaces 422 a and 426 a are inclined with respect to the rotation axis X 2 .
- a V groove around which the chain 43 is wound is provided between the sheave surfaces 422 a and 426 a.
- a groove width of the V groove is changed by the displacement of the movable pulley 425 in the direction of the rotation axis X 2 , and a winding radius of the chain 43 in the secondary pulley 42 is changed.
- the rotational driving force of the engine is input to the primary pulley 41 via the torque converter 2 and the forward and reverse switching mechanism 3 .
- the rotational driving force input to the primary pulley 41 is transmitted to the secondary pulley 42 via the chain 43 .
- the rotational driving force transmitted to the secondary pulley 42 is transmitted to the reduction gear 5 .
- the reduction gear 5 is provided rotatably about a rotation axis X 3 parallel to the rotation axis X 2 .
- a final gear 60 of the differential device 6 meshes with the reduction gear 5 so as to transmit rotation.
- the rotational driving force transmitted from the secondary pulley 42 to the reduction gear 5 is transmitted to the differential device 6 via the final gear 60 .
- a drive shaft 61 coupled to the differential device 6 rotates about a rotation axis X 4 parallel to the rotation axis X 3 .
- a drive wheel (not illustrated) to which the drive shaft 61 is coupled is rotated by the transmitted rotational driving force.
- the torque converter 2 , the forward and reverse switching mechanism 3 , the variator 4 , the reduction gear 5 , and the differential device 6 are accommodated in a transmission case 10 (see FIG. 1 ).
- the transmission case 10 includes a converter housing 11 , a case 12 , and a side cover 13 .
- the converter housing 11 , the case 12 , and the side cover 13 are stacked in order in the direction of the rotation axis X 1 .
- the converter housing 11 accommodates the torque converter 2 .
- the converter housing 11 is attached to an engine block (not illustrated) in the direction of the rotation axis X 1 .
- the converter housing 11 and the engine block are fixed by a bolt (not illustrated).
- the case 12 accommodates the forward and reverse switching mechanism 3 , the variator 4 , the reduction gear 5 , and the differential device 6 .
- the case 12 is attached to the converter housing 11 in the direction of the rotation axis X 1 .
- the case 12 and the converter housing 11 are fixed by a bolt B.
- the side cover 13 is attached to the case 12 in the direction of the rotation axis X 1 .
- the side cover 13 and the case 12 are fixed by the bolt B.
- FIG. 2 is a perspective view of the case 12 as viewed from a side cover 13 side.
- FIG. 3 is a front view of the case 12 as viewed from the side cover 13 side.
- FIG. 4 is a front view of the case 12 as viewed from a converter housing 11 side.
- the variator 4 is indicated by imaginary lines.
- the forward and reverse switching mechanism 3 , the reduction gear 5 , and the final gear 60 are indicated by imaginary lines.
- FIG. 3 in order to facilitate understanding of a position of a joining surface with the side cover 13 , the joining surface is hatched.
- FIG. 4 in order to facilitate understanding of a joining surface with the converter housing 11 and positions of arc-shaped walls 123 and 124 , the joining surface and the arc-shaped walls 123 and 124 are hatched.
- the case 12 includes an intermediate wall portion 125 .
- the intermediate wall portion 125 is formed in an internal space of the case 12 .
- the intermediate wall portion 125 is formed in an orientation intersecting the rotation axes X 1 and X 2 .
- the internal space of the case 12 is divided into a space S 1 (see FIG. 3 ) and a space S 2 (see FIG. 4 ) by the intermediate wall portion 125 .
- the space S 1 is located on one side (the side cover 13 side) of the intermediate wall portion 125 in the direction of the rotation axes X 1 and X 2
- the space S 2 is located on the other side (the converter housing 11 side).
- the space S 1 is a space in a recess formed by surrounding the intermediate wall portion 125 with an annular wall 121 .
- the space S 2 is a space in a recess formed by surrounding the intermediate wall portion 125 with an annular wall 122 .
- the annular wall 121 and the annular wall 122 extend in directions away from each other from the intermediate wall portion 125 (a front-rear direction in the paper in FIG. 2 ).
- the variator 4 is accommodated in the space S 1 of the case 12 (see the imaginary lines in FIG. 3 ).
- the forward and reverse switching mechanism 3 , the reduction gear 5 , and the differential device 6 (final gear 60 ) are accommodated in the space S 2 of the case 12 (see the imaginary lines in FIG. 4 ).
- through holes 125 a and 125 b are formed in the intermediate wall portion 125 of the case 12 .
- the through holes 125 a and 125 b are formed in a region intersecting the rotation axes X 1 and X 2 of the primary pulley 41 and the secondary pulley 42 .
- the space S 1 and the space S 2 communicate with each other via the through holes 125 a and 125 b.
- a through hole 125 c is formed in the intermediate wall portion 125 of the case 12 .
- the through hole 125 c is formed in a region intersecting the rotation axis X 4 of the final gear 60 .
- the space S 2 also communicates with a region outside the annular wall 121 (a region outside the space S 1 ) through the through hole 125 c (see FIG. 3 ).
- the arc-shaped wall 123 surrounding the through hole 125 a and the arc-shaped wall 124 surrounding the through hole 125 c are formed on a space S 2 side of the intermediate wall portion 125 .
- a region surrounded by the arc-shaped wall 123 in the space S 2 constitutes an accommodation chamber R 1 accommodating the forward and reverse switching mechanism 3 .
- a region surrounded by the arc-shaped wall 124 in the space S 2 constitutes a differential chamber R 2 accommodating the final gear 60 .
- the variator 4 is accommodated in the space S 1 of the case 12 .
- the chain 43 is wound around the primary pulley 41 and the secondary pulley 42 in the space S 1 .
- the continuously variable transmission 1 includes chain guides 9 A and 9 B (see FIG. 5 ) for reducing the vibration of the chain 43 .
- FIG. 5 is a diagram illustrating an arrangement of the chain guides 9 A and 9 B in the variator 4 .
- FIG. 5 corresponds to the variator 4 indicated by the imaginary lines in FIG. 3 .
- the chain guide 9 A is illustrated in a schematic view of a cross section thereof, and the chain guide 9 B is illustrated in a side view. Further, the chain 43 is illustrated in a simplified manner.
- the chain guides 9 A and 9 B are arranged in a region in which the chain 43 is not wound around the primary pulley 41 and the secondary pulley 42 .
- the chain guides 9 A and 9 B are arranged in a symmetrical positional relationship with respect to a straight line Lm 1 .
- the straight line Lm 1 is a line connecting the rotation axis X 1 of the primary pulley 41 and the rotation axis X 2 of the secondary pulley 42 .
- the chain guide 9 A and the chain guide 9 B are respectively disposed on an upper side and a lower side of the straight line Lm 1 in a direction of a vertical line VL.
- the vertical line VL is a line based on a state where the continuously variable transmission 1 is mounted on the vehicle.
- the chain guide 9 A is swingably coupled to a chain guide support shaft 7 A.
- the chain guide 9 B is swingably coupled to a chain guide support shaft 7 B.
- the chain guide support shafts 7 A and 7 B are arranged in a symmetrical positional relationship with respect to the straight line Lm 1 .
- the chain guide support shafts 7 A and 7 B are arranged on an inner side of the chain 43 .
- the chain guide support shafts 7 A and 7 B are supported by tubular members 8 A and 8 B, respectively, which will be described later.
- the chain guides 9 A and 9 B according to the present embodiment have the same shape.
- the chain guide 9 B will be described as an example. Description of the chain guide 9 A will be omitted.
- FIG. 6 is a diagram illustrating the chain guide 9 B and is a perspective view of the chain guide 9 B as viewed from an intermediate wall portion 125 side.
- a tubular member 8 B is separated from the chain guide support shaft 7 B.
- FIG. 7 is a perspective view illustrating the tubular member 8 B.
- FIG. 8 is a diagram illustrating the tubular member 8 B and is a schematic view of a cross section obtained by cutting the tubular member 8 B of FIG. 7 along a longitudinal direction thereof.
- FIG. 9 is a diagram illustrating the tubular member 8 B and is a schematic view of an A-A cross section in FIG. 8 .
- FIG. 10 is a diagram illustrating an arrangement of the tubular members 8 A and 8 B in the space S 1 and is a schematic view of an A-A cross section in FIG. 5 .
- the chain guide 9 B includes a pair of guide members 91 R and 91 L.
- the guide members 91 R and 91 L have the same shape.
- the chain guide 9 B is formed with the guide members 91 R and 91 L overlapped in a direction of a straight line Lx 1 parallel to the rotation axes X 1 and X 2 .
- the guide member 91 R includes guide portions 910 Ra and 910 Rb and a connection portion 911 R that connects the guide portions 910 Ra and 910 Rb to each other.
- the guide portions 910 Ra and 910 Rb are arranged on one side and the other side in a thickness direction (an up-down direction in FIG. 6 ) of the chain 43 .
- the connection portion 911 R is disposed on a lateral side (a right side in FIG. 6 ) of the chain 43 .
- the guide portions 910 Ra and 910 Rb and the connection portion 911 R of the guide member 91 R are integrally formed of the same material.
- the guide portions 910 Ra and 910 Rb are plate-shaped members arranged along a longitudinal direction of the chain 43 .
- the connection portion 911 R connects central portions of the guide portions 910 Ra and 910 Rb in a longitudinal direction to each other.
- the guide member 91 L includes guide portions 910 La and 910 Lb and a connection portion 911 L that connects the guide portions 910 La and 910 Lb to each other.
- the guide portions 910 La and 910 Lb are arranged on one side and the other side in the thickness direction (the up-down direction in FIG. 6 ) of the chain 43 .
- the connection portion 911 L is disposed on a lateral side (a left side in FIG. 6 ) of the chain 43 .
- the guide portions 910 La and 910 Lb and the connection portion 911 L of the guide member 91 L are integrally formed of the same material.
- the guide portions 910 La and 910 Lb are plate-shaped members arranged along the longitudinal direction of the chain 43 .
- the connection portion 911 L connects central portions of the guide portions 910 La and 910 Lb in a longitudinal direction to each other.
- the guide members 91 R and 91 L are overlapped with each other in the direction of the straight line Lx 1 .
- the guide portions 910 Ra and 910 La are in contact with each other and the guide portions 910 Rb and 910 Lb are in contact with each other over an entire length of the chain 43 in the longitudinal direction thereof.
- the chain 43 is disposed in a space surrounded by the guide portions 910 Ra and 910 Rb and the connection portion 911 R of the guide member 91 R and the guide portions 910 La and 910 Lb and the connection portion 911 L of the guide member 91 L.
- the guide members 91 R and 91 L respectively include coupling portions 912 R and 912 L coupled to the chain guide support shaft 7 B.
- the coupling portions 912 R and 912 L are also integrally formed with the guide portions 910 Ra and 910 La, respectively.
- the coupling portions 912 R and 912 L are respectively formed at central portions of the guide portions 910 Ra and 910 La in the longitudinal direction thereof.
- the coupling portions 912 R and 912 L are overlapped with each other in the direction of the straight line Lx 1 and coupled by the bolts B. Accordingly, the guide members 91 R and 91 L are maintained in a state of being overlapped with each other in the direction of the straight line Lx 1 .
- the chain guide support shaft 7 B is a shaft-shaped member disposed in an orientation along an axis line Lx 2 parallel to the rotation axes X 1 and X 2 .
- the chain guide support shaft 7 B includes a small-diameter shaft portion 70 and a large-diameter shaft portion 71 .
- the small-diameter shaft portion 70 is one end 7 a side (a left side in the diagram) in a direction of the axis line Lx 2
- the large-diameter shaft portion 71 is on the other end 7 b side (a right side in the diagram).
- a stepped surface 73 is formed at a boundary between the small-diameter shaft portion 70 and the large-diameter shaft portion 71 .
- the stepped surface 73 is a flat surface orthogonal to the axis line Lx 2 .
- the small-diameter shaft portion 70 of the chain guide support shaft 7 B is inserted into an insertion hole 131 of the side cover 13 from the direction of the axis line Lx 2 .
- the stepped surface 73 of the chain guide support shaft 7 B abuts on a peripheral edge portion 131 a of the insertion hole 131 from the direction of the axis line Lx 2 .
- the large-diameter shaft portion 71 of the chain guide support shaft 7 B includes a flange-shaped support plate 711 .
- the support plate 711 is formed at an intermediate position of the large-diameter shaft portion 71 in the direction of the axis line Lx 2 .
- the intermediate position of the large-diameter shaft portion 71 is between one end and the other end of the large-diameter shaft portion 71 in the direction of the axis line Lx 2 .
- the support plate 711 extends radially outward of the axis line Lx 2 from an outer periphery of the large-diameter shaft portion 71 .
- the support plate 711 surrounds the large-diameter shaft portion 71 over an entire circumference in a circumferential direction around the axis line Lx 2 (see FIG. 6 ).
- an insertion hole 72 is opened in the other end 7 b of the chain guide support shaft 7 B.
- the insertion hole 72 extends in the direction of the axis line Lx 2 inside the large-diameter shaft portion 71 .
- the tubular member 8 B is inserted into the insertion hole 72 from the direction of the axis line Lx 2 (see FIG. 6 ).
- the tubular member 8 B is formed by bending one steel pipe at two locations between one end and the other end thereof in the longitudinal direction.
- the tubular member 8 B includes a first tubular portion 80 disposed in the orientation along the axis line Lx 2 , and a second tubular portion 81 disposed in an orientation along an axis line Lx 3 .
- the axis line Lx 3 is parallel to the axis line Lx 2 .
- the first tubular portion 80 and the second tubular portion 81 are connected to each other via a tubular connection portion 82 .
- the first tubular portion 80 is located on one end 8 a side (a left side in the diagram) of the tubular member 8 B in the longitudinal direction, and the second tubular portion 81 is located on the other end 8 b side (a right side in the diagram).
- the first tubular portion 80 includes a bottom wall portion 802 orthogonal to the axis line Lx 2 , and a tubular wall portion 801 surrounding an entire outer periphery of the bottom wall portion 802 .
- the tubular wall portion 801 extends from the bottom wall portion 802 to the other side (a right side in the diagram) in the direction of the axis line Lx 2 .
- the tubular wall portion 801 is connected to the connection portion 82 on the other side in the direction of the axis line Lx 2 .
- connection portion 82 is disposed in an orientation along an axis line La intersecting the axis line Lx 2 and the axis line Lx 3 .
- the connection portion 82 is connected to the second tubular portion 81 on a side opposite to the first tubular portion 80 in a direction of the axis line La.
- the second tubular portion 81 includes a tubular wall portion 811 surrounding the axis line Lx 3 .
- the tubular wall portion 811 extends from the connection portion 82 to the other side (the right side in the diagram) in a direction of the axis line Lx 3 .
- the tubular wall portion 811 has an opening end 811 c at an end surface (the other end 8 b ) on the other side in the direction of the axis line Lx 3 .
- the tubular member 8 B has a bottomed tubular shape as a whole. Internal spaces of the first tubular portion 80 , the connection portion 82 , and the second tubular portion 81 communicate with one another, and one oil passage 85 is formed inside the tubular member 8 B. One end of the oil passage 85 is sealed by the bottom wall portion 802 of the first tubular portion 80 . The other end of the oil passage 35 communicates with an outside through the opening end 811 c of the second tubular portion 81 .
- a flange-shaped support plate 803 is formed at the first tubular portion 80 of the tubular member 8 B.
- the support plate 803 is formed at an intermediate position of the tubular wall portion 801 in the direction of the axis line Lx 2 .
- the intermediate position of the tubular wall portion 801 is between one end and the other end of the tubular wall portion 801 in the direction of the axis line Lx 2 .
- the support plate 803 extends radially outward of the axis line Lx 2 from an outer periphery of the tubular wall portion 801 .
- the support plate 803 surrounds the tubular wall portion 801 over the entire circumference in the circumferential direction around the axis line Lx 2 (see FIG. 9 ).
- the support plate 803 includes an inner-diameter side region 803 a and an outer-diameter side region 803 b in a radial direction (the up-down direction in the diagram) of the axis line Lx 2 .
- the inner-diameter side region 803 a is offset to the other side (the right side in the diagram) in the direction of the axis line Lx 2 with respect to the outer-diameter side region 803 b .
- the support plate 803 includes a recess 803 c inside the outer-diameter side region 803 b in the radial direction of the axis line Lx 2 .
- the second tubular portion 81 includes a strip-shaped bracket 813 .
- the bracket 813 is formed at an intermediate position of the tubular wall portion 811 in the direction of the axis line Lx 3 .
- the intermediate position of the tubular wall portion 811 is between one end and the other end of the tubular wall portion 811 in the direction of the axis line Lx 3 .
- the bracket 813 is fixed to the tubular wall portion 811 with a thickness direction being along the direction of the axis line Lx 3 .
- a straight line Lp along a longitudinal direction of the bracket 813 intersects the axis line Lx 2 and the axis line Lx 3 .
- the tubular wall portion 811 is located on one side (an upper side in the diagram) of the bracket 813 in a direction of the straight line Lp.
- a through hole 813 a penetrating the bracket 813 in the thickness direction thereof is formed on the other side (a lower side in the diagram) of the bracket 813 in the direction of the straight line Lp.
- a through hole 815 penetrating the tubular wall portion 811 in the thickness direction thereof is formed in the tubular wall portion 811 of the second tubular portion 81 .
- the through hole 815 is located on the other end 8 b side of the tubular member 8 B.
- a distance between the through hole 815 and the bracket 813 in the direction of the axis line Lx 3 is set to T 1 .
- the through hole 815 allows an outside of the tubular member 8 B to communicate with the oil passage 85 .
- the through hole 815 is displaced from the straight line Lp in a circumferential direction around the axis line Lx 3 .
- a straight line Lq that connects the through hole 815 and the axis line Lx 3 is inclined with respect to the straight line Lp along the longitudinal direction of the bracket 813 .
- the first tubular portion 80 of the tubular member 8 B is inserted into the insertion hole 72 of the chain guide support shaft 7 B from the direction of the axis line Lx 2 .
- the second tubular portion 81 of the tubular member 8 B is inserted into an insertion hole 128 formed in the intermediate wall portion 125 .
- the second tubular portion 81 is inserted into the insertion hole 128 from the direction of the axis line Lx 3 .
- a boss portion 129 is formed on the intermediate wall portion 125 of the case 12 .
- the bracket 813 is fixed to the boss portion 129 with the bolt B from a direction of an axis line Lx 4 parallel to the axis line Lx 3 .
- the insertion hole 128 and the boss portion 129 are formed below the straight line Lm 1 in the intermediate wall portion 125 (see FIG. 11 ).
- the chain guide support shaft 7 B and the tubular member 8 B are attached across the side cover 13 and the case 12 .
- the chain guide support shaft 7 B and the tubular member 8 B cross the space S 1 in a direction along the axis line Lx 2 .
- the support plate 711 of the chain guide support shaft 7 B and the support plate 803 of the tubular member 8 B are spaced apart from each other in the direction of the axis line Lx 2 .
- the coupling portions 912 L and 912 R of the chain guide 9 B described above are arranged between the support plate 711 and the support plate 803 in the direction of the axis line Lx 2 .
- Vibration of a belt 43 is finally dispersed to the case 12 and the side cover 13 through the chain guide support shaft 7 B and the tubular member 8 B after being received by the chain guide 9 B. Accordingly, the vibration of the belt 43 is reduced.
- the first tubular portion 80 of the tubular member 8 B is inserted into the insertion hole 72 of the chain guide support shaft 7 B, and the recess 803 c of the support plate 803 accommodates the other end 7 b side of the chain guide support shaft 7 B. Accordingly, the tubular member 8 B supports the chain guide support shaft 7 B while preventing the chain guide support shaft 7 B itself from vibrating in the radial direction of the axis line Lx 2 due to the vibration of the belt 43 .
- the tubular member 8 B serves as a support member
- the chain guide support shaft 7 B serves as a supported member
- the chain guide 9 A also includes the coupling portions 912 L and 912 R.
- the chain guide 9 A is coupled to the chain guide support shaft 7 A via the coupling portions 912 L and 912 R.
- the chain guide support shaft 7 A is one shaft-shaped member and has the same basic shape as that of the chain guide support shaft 7 B described above.
- the chain guide support shaft 7 A is disposed in an orientation along an axis line Lx 5 parallel to the rotation axes X 1 and X 2 (see FIG. 6 ).
- the chain guide support shaft 7 A includes the small-diameter shaft portion 70 and the large-diameter shaft portion 71 .
- the small-diameter shaft portion 70 is located on the one end 7 a side of the chain guide support shaft 7 A in a direction of the axis line Lx 5
- the large-diameter shaft portion 71 is located on the other end 7 b side.
- the small-diameter shaft portion 70 of the chain guide support shaft 7 A is inserted into an insertion hole 132 of the side cover 13 from the direction of the axis line Lx 5 .
- the stepped surface 73 of the chain guide support shaft 7 A abuts on a peripheral edge portion 132 a of the insertion hole 132 from the direction of the axis line Lx 5 .
- An oil passage 75 extending in the direction of the axis line Lx 5 is formed inside the chain guide support shaft 7 A.
- the oil passage 75 penetrates the small-diameter shaft portion 70 and the large-diameter shaft portion 71 in the direction of the axis line Lx 5 .
- the oil passage 75 is opened at one end 7 a and the other end 7 b of the chain guide support shaft 7 A.
- an injection hole 76 is formed in a region between the support plate 711 and the other end 7 b in the direction of the axis line Lx 5 .
- the injection hole 76 penetrates the large-diameter shaft portion 71 in a direction orthogonal to the axis line Lx 5 and allows the oil passage 75 to communicate with the space S 1 .
- the tubular member 8 A is inserted into the oil passage 75 of the chain guide support shaft 7 A from the other end 7 b side.
- the tubular member 8 A is formed by bending one steel pipe at two locations between one end and the other end thereof in the longitudinal direction and has the same basic shape as that of the tubular member 8 B described above.
- tubular member 8 A will be described.
- the tubular member 8 A is different from the tubular member 8 B in that the tubular member 8 A does not include the bottom wall portion 802 of the first tubular portion 80 and the oil passage 85 is opened at both ends in the longitudinal direction.
- the tubular member 8 A is different from the tubular member 8 B in that the tubular member 8 A does not include the through hole 815 in the second tubular portion 81 .
- the first tubular portion 80 is inserted into the oil passage 75 of the chain guide support shaft 7 A from the direction of the axis line Lx 5 .
- the second tubular portion 81 is inserted into an insertion hole 126 formed in the intermediate wall portion 125 .
- the second tubular portion 81 is inserted into the insertion hole 126 from a direction of an axis line Lx 6 parallel to the axis line Lx 5 .
- the bracket 813 is fixed to a boss portion 127 formed on the intermediate wall portion 125 of the case 12 with the bolt B.
- the insertion hole 126 and the boss portion 127 are formed above the straight line Lm 1 in the intermediate wall portion 125 (see FIG. 11 ).
- the chain guide support shaft 7 A and the tubular member 8 A are attached across the side cover 13 and the case 12 .
- the chain guide support shaft 7 A and the tubular member 8 A cross the space S 1 in a direction along the axis line Lx 5 .
- the insertion hole 126 into which the second tubular portion 81 of the tubular member 8 A is inserted communicates with an in-case oil passage 15 in the intermediate wall portion 125 .
- the insertion hole 128 into which the second tubular portion 81 of the tubular member 8 B is inserted communicates with an in-case oil passage 16 in the intermediate wall portion 125 .
- the in-case oil passages 15 and 16 are lubricating oil passages for supplying lubricating oil OL in the case 12 , which is raised by the rotation of the final gear 60 (see FIG. 4 ), to a predetermined region in the case 12 .
- the in-case oil passage 15 extends in the direction of the axis line Lx 6 in the intermediate wall portion 125 .
- the other end 15 b of the in-case oil passage 15 in the direction of the axis line Lx 6 is opened in the arc-shaped wall 123 (see FIG. 4 ) in the space S 2 side described above.
- the insertion hole 126 is connected to one end 15 a of the in-case oil passage 15 in the direction of the axis line Lx 6 .
- the insertion hole 126 extends in the direction of the axis line Lx 6 .
- An end portion of the insertion hole 126 on a side (a space S 1 side) opposite to the in-case oil passage 15 in the direction of the axis line Lx 6 is opened in a surface of the intermediate wall portion 125 (see FIG. 11 ).
- the in-case oil passage 15 communicates with the space S 1 via the insertion hole 126 .
- the insertion hole 126 constitutes a part of the in-case oil passage 15 .
- the first tubular portion 80 of the tubular member 8 A is inserted into the oil passage 75 in the chain guide support shaft 7 A, and the second tubular portion 81 is inserted into the insertion hole 126 . Accordingly, the oil passage 85 in the tubular member 8 A communicates with the oil passage 75 of the chain guide support shaft 7 A on a first tubular portion 80 side and communicates with the in-case oil passage 15 on a second tubular portion 81 side.
- An oil passage 135 formed in the side cover 13 communicates with the insertion hole 132 of the side cover 13 into which the small-diameter shaft portion 70 of the chain guide support shaft 7 A is inserted.
- the in-case oil passage 15 communicates with the oil passage 135 of the side cover 13 via the oil passage 85 in the tubular member 8 A and the oil passage 75 in the chain guide support shaft 7 A.
- a part of the lubricating oil OL that is raised by the rotation of the final gear 60 flows from the other end 15 b (see FIG. 4 ) of the in-case oil passage 15 and is supplied from the one end 15 a to the oil passage 85 in the tubular member 8 A. Then, the lubricating oil OL supplied to the oil passage 85 finally moves to the oil passage 135 in the side cover 13 through the oil passage 75 in the chain guide support shaft 7 A. A part of the lubricating oil OL passing through the oil passage 75 is injected from the injection hole 76 to lubricate the chain 43 .
- the in-case oil passage 16 is formed in a rib 18 (see FIG. 2 ) provided on the intermediate wall portion 125 .
- the rib 18 protrudes from the intermediate wall portion 125 to the space S 1 side (a front side in the paper in FIG. 2 ) in the direction of the rotation axes X 1 and X 2 .
- FIG. 11 is a diagram illustrating the rib 18 and is an enlarged view of a region A in FIG. 3 .
- FIG. 12 is a diagram illustrating the in-case oil passage 16 formed in the rib 18 and is a schematic view of an A-A cross section in FIG. 11 .
- FIG. 13 is a diagram illustrating an arrangement of the tubular member 8 B.
- the tubular member 8 B is indicated by imaginary lines.
- the final gear 60 in the differential chamber R 2 is omitted.
- the rib 18 protrudes from the intermediate wall portion 125 to the front side in the paper.
- the rib 18 is located below the straight line Lm 1 connecting the rotation axis X 1 and the rotation axis X 2 .
- the rib 18 is provided in an orientation along a straight line Lr.
- the straight line Lr is a line substantially parallel to a straight line Lm 2 connecting the rotation axis X 1 and the rotation axis X 4 .
- the rib 18 crosses the annular wall 121 from an inner side to an outer side.
- One end portion 18 a (a left side in the diagram) of the rib 18 in a direction of the straight line Lr is located in the space S 1 and is located in a vicinity of the through hole 125 a .
- the other end 18 b (a right side in the diagram) of the rib 18 in the direction of the straight line Lr is located outside the space S 1 and is located in a vicinity of the through hole 125 c.
- the insertion hole 128 and the boss portion 129 described above are formed on one end portion 18 a side (the left side in the diagram) of the rib 18 .
- the insertion hole 128 is located on the straight line Lr.
- the boss portion 129 is located below the straight line Lr on the other end 18 b side of the rib 18 when viewed from the insertion hole 128 .
- the in-case oil passage 16 is formed in the rib 18 .
- the in-case oil passage 16 When viewed from the direction of the rotation axis X 4 , the in-case oil passage 16 extends in a radial direction of the rotation axis X 4 in a region overlapping the differential chamber R 2 . In FIG. 4 , a position of the in-case oil passage 16 is indicated by a broken line.
- the in-case oil passage 16 includes an outer-diameter side oil passage 161 , an inner-diameter side oil passage 162 , and a connection oil passage 163 .
- the outer-diameter side oil passage 161 is provided in an orientation along the rotation axis X 4 .
- One end 161 a of the outer-diameter side oil passage 161 communicates with the insertion hole 128 .
- the other end 161 b of the outer-diameter side oil passage 161 is opened in the arc-shaped wall 123 described above (see FIG. 4 ).
- the insertion hole 128 communicating with the one end 161 a of the outer-diameter side oil passage 161 is provided in series with the outer-diameter side oil passage 161 in the orientation along the rotation axis X 4 .
- the insertion hole 128 and the outer-diameter side oil passage 161 are concentrically arranged.
- An end portion of the insertion hole 128 on a side opposite to the outer-diameter side oil passage 161 in the direction of the rotation axis X 4 (a lower side in FIG. 12 ) is opened in the surface of the intermediate wall portion 125 (the rib 18 ).
- the outer-diameter side oil passage 161 of the in-case oil passage 16 communicates with the space S 1 via the insertion hole 128 .
- the insertion hole 128 constitutes a part of the in-case oil passage 16 .
- connection oil passage 163 is opened at an intermediate position of the insertion hole 128 in the direction of the rotation axis X 4 .
- the intermediate position of the insertion hole 128 is between one end and the other end of the insertion hole 128 in the direction of the rotation axis X 4 .
- connection oil passage 163 extends in the rib 18 in the direction of the straight line Lr (a left-right direction in FIG. 12 ).
- the other end 163 b of the connection oil passage 163 opens toward an outside of the annular wall 121 .
- An opening of the other end 163 b is sealed with a plug Hs.
- the plug Hs include a known hollow set.
- One end 162 a of the inner-diameter side oil passage 162 is opened on the other end 163 b side of the connection oil passage 163 .
- the inner-diameter side oil passage 162 is located radially inward of the outer-diameter side oil passage 161 in the radial direction of the rotation axis X 4 .
- the inner-diameter side oil passage 162 extends in the direction of the rotation axis X 4 , and the other end 162 b is opened to the differential chamber R 2 (see FIG. 4 ).
- a straight line Ls connecting the insertion hole 128 and the boss portion 129 is inclined with respect to the straight line Lr.
- the inclination of the straight line Lr with respect to the straight line Ls is the same as the inclination (see FIG. 9 ) of the straight line Lq with respect to the straight line Lp in the bracket 813 of the tubular member 8 B described above.
- a distance between a surface of the rib 18 and the straight line Lr in the direction of the rotation axis X 4 is set to T 2 .
- the second tubular portion 81 of the tubular member 8 B is inserted into the insertion hole 128 .
- the oil passage 85 in the tubular member 8 B communicates with the outer-diameter side oil passage 161 via the opening end 811 c.
- the bracket 813 is fixed to the boss portion 129 .
- the straight line Lp (see FIG. 9 ) along the longitudinal direction of the bracket 813 is disposed at a position that coincides with the straight line Ls connecting the insertion hole 128 and the boss portion 129 .
- the internal space of the second tubular portion 81 communicates with the connection oil passage 163 via the through hole 815 . Therefore, the oil passage 85 in the tubular member 8 B communicates with the connection oil passage 163 via the through hole 815 (see the enlarged region in FIG. 13 ).
- the insertion hole 128 constitutes a part of the in-case oil passage 16 . Therefore, by inserting the tubular member 8 B into the insertion hole 128 , the oil passage 85 in the tubular member 8 B also constitutes a part of the in-case oil passage 16 .
- the oil passage 85 serves as an oil passage interposed between the outer-diameter side oil passage 161 and the connection oil passage 163 (see FIG. 13 ).
- One end (a lower side in FIG. 13 ) of the oil passage 85 is sealed by the bottom wall portion 802 . Then, the lubricating oil OL sequentially flows into the oil passage 85 from an opening end 811 c side. Therefore, an inside of the oil passage 85 is finally filled with the lubricating oil OL.
- the lubricating oil OL moved from the through hole 815 to the connection oil passage 163 moves from one end 163 a side to the other end 163 b side through the connection oil passage 163 (an arrow C in FIG. 13 ).
- connection oil passage 163 The other end 163 b of the connection oil passage 163 is sealed with the plug Hs. Therefore, an orientation of the lubricating oil OL that moves through the connection oil passage 163 is changed by the plug Hs, and the lubricating oil OL moves from the one end 162 a to the inside of the inner-diameter side oil passage 162 .
- the lubricating oil OL passing through the inner-diameter side oil passage 162 is returned from the other end 162 b to the differential chamber R 2 (an arrow D in FIG. 13 ).
- the lubricating oil OL returned to the differential chamber R 2 is again raised by the rotation of the final gear 60 (see FIG. 4 ).
- the case 12 is manufactured by casting.
- the in-case oil passages 15 and 16 in the case 12 are formed by placing cores at predetermined positions in a mold at the time of casting the case 12 and then pouring and solidifying molten metal.
- the cores have shapes corresponding to the in-case oil passages 15 and 16 .
- connection oil passage 163 corresponds to the opening portions of the in-case oil passages 15 and 16 .
- the in-case oil passage 15 is used to supply the lubricating oil OL to a variator 4 side. Therefore, the insertion hole 126 serving as the opening portion of the in-case oil passage 15 is used in an open state.
- the in-case oil passage 16 is used to return the lubricating oil OL to the differential chamber R 2 .
- the insertion hole 128 serving as the opening portion of the in-case oil passage 16 and the other end 163 b side of the connection oil passage 163 are sealed with a sealing member.
- the tubular member 8 B is inserted into the insertion hole 128 .
- the plug Hs is inserted into the other end 163 b of the connection oil passage 163 .
- each of the tubular member 8 B and the plug Hs corresponds to the sealing member.
- the tubular member 8 B according to the present embodiment is inserted into the insertion hole 128 in the case 12 (see FIG. 13 ). Accordingly, the tubular member 8 B supports the chain guide support shaft 7 B and blocks the communication between the in-case oil passage 16 and the space S 1 implemented via the insertion hole 128 .
- the tubular member 8 B serves both as a support member and a plug.
- the plug for sealing the insertion hole 128 may not be separately used.
- the shaft member can both serve as the support member for the chain guide support shaft 7 B and the plug for the insertion hole 128 .
- the shaft member when the shaft member is inserted into the insertion hole 128 , the flow of the lubricating oil OL from the outer-diameter side oil passage 161 to the connection oil passage 163 may be hindered.
- a support strength for supporting the chain guide support shaft 7 B is reduced.
- the tubular member 8 B is a hollow steel pipe and includes the oil passage 85 and the through hole 815 .
- the oil passage 85 and the through hole 815 constitute a part of the in-case oil passage 16 . Therefore, even if the tubular member 8 B is deeply inserted into the insertion hole 128 , the flow of the lubricating oil OL in the in-case oil passage 16 is not hindered. Accordingly, the support strength for supporting the chain guide support shaft 7 B can be improved.
- the in-case oil passage 16 includes the insertion hole 128 (an opening portion) that allows the in-case oil passage 16 to communicate with the space S 1 inside the case 12 .
- the tubular member 8 B is inserted into the insertion hole 128 .
- the tubular member 8 B can seal the insertion hole 128 while supporting the chain guide support shaft 7 B.
- the tubular member 8 B receives a pressure from the lubricating oil OL that flows into the oil passage 85 from the outer-diameter side oil passage 161 of the in-case oil passage 16 . This pressure acts in a direction in which the tubular member 8 B is pulled out from the insertion hole 128 (downward in FIG. 13 ).
- the fastening force of the bolt B applied to the tubular member 8 B is in a direction against the pressure received from the lubricating oil OL.
- the tubular member 8 B is prevented from being pulled out from the insertion hole 128 , and sealing performance of the insertion hole 128 by the tubular member 8 B can be improved.
- the insertion hole 128 provided in the in-case oil passage 16 is sealed by the tubular member 8 B.
- the increase in the number of components can be reduced while reliably returning the lubricating oil OL, which is raised by the rotation of the final gear 60 , to the differential chamber R 2 .
- the chain guide 9 B coupled to the chain guide support shaft 7 B is a guide member that guides the chain 43 .
- the tubular member 8 B supports the chain guide support shaft 7 B coupled to the chain guide 9 B.
- the through hole 815 penetrating the tubular wall portion 811 is formed in the tubular wall portion 811 (a side wall) of the second tubular portion 81 .
- the tubular member 8 B is inserted into the insertion hole 128 from the opening end 811 c side of the second tubular portion 81 , and the through hole 815 communicates with the connection oil passage 163 of the in-case oil passage 16 .
- the lubricating oil OL in the in-case oil passage 16 flows into the oil passage 85 (an internal space) of the tubular member 8 B from the outer-diameter side oil passage 161 through the opening end 811 c , and then is discharged from the through hole 815 to the connection oil passage 163 .
- the oil passage 85 in the tubular member 8 B serves as a part of the in-case oil passage 16 . Accordingly, the flow of the lubricating oil OL in the in-case oil passage 16 can be smoothly changed.
- one tubular member 8 B can support the chain guide support shaft 7 B and seal the insertion hole 128 .
- the support structure 100 of the tubular member 8 B includes:
- the in-case oil passage 16 includes the insertion hole 128 that allows the in-case oil passage 16 to communicate with the space S 1 inside the case 12 .
- the tubular member 8 B is inserted into the insertion hole 128 .
- the tubular member 8 B is supported by the case 12 while blocking the communication between the in-case oil passage 16 and the space S 1 inside the case 12 .
- the tubular member 8 B can seal the insertion hole 128 while supporting the chain guide support shaft 7 B.
- the opening end 811 c of the tubular member 8 B communicates with the outer-diameter side oil passage 161 of the in-case oil passage 16 , and the through hole 815 communicates with the connection oil passage 163 is exemplified, but the invention is not limited to the aspect. For example, the following modification may be made.
- FIG. 14 is a diagram illustrating a continuously variable transmission 1 A according to a modification.
- an insertion hole 128 A extends in a direction of a straight line Lr′ orthogonal to the axis line Lx 2 and is connected in series with a connection oil passage 163 ′.
- the outer-diameter side oil passage 161 is connected to an intermediate position of the insertion hole 128 A in the direction of the straight line Lr′.
- the intermediate position of the insertion hole 128 A is between one end and the other end of the insertion hole 128 A in the direction of the straight line Lr′.
- a tubular member 8 B′ is formed by bending one steel pipe at one location between one end and the other end in a longitudinal direction thereof and has a substantially L-shape.
- the tubular member 8 B′ includes the first tubular portion 80 disposed in the orientation along the straight line Lx 2 , and a second tubular portion 81 ′ disposed in an orientation along the straight line Lr′.
- the through hole 815 communicates with the outer-diameter side oil passage 161 of the in-case oil passage 16 , and the opening end 811 c communicates with the connection oil passage 163 ′.
- the lubricating oil OL flows into the oil passage 85 in the tubular member 8 B′ from the outer-diameter side oil passage 161 through the through hole 815 .
- the lubricating oil OL is discharged from the opening end 811 c to the connection oil passage 163 ′.
- the lubricating oil OL is discharged from the connection oil passage 163 ′ to the differential chamber R 2 through the inner-diameter side oil passage 162 (see arrows E to H in FIG. 14 ).
- the continuously variable transmission 1 A has, for example, the following configuration.
- the through hole 815 penetrating the tubular wall portion 811 is formed in the tubular wall portion 811 (a side wall) of the second tubular portion 81 ′.
- the tubular member 8 B′ is inserted into the insertion hole 128 A from the opening end 811 c side of the second tubular portion 81 , and the through hole 815 communicates with the outer-diameter side oil passage 161 of the in-case oil passage 16 .
- the lubricating oil OL in the in-case oil passage 16 flows into the oil passage 85 in the tubular member 8 B′ from the outer-diameter side oil passage 161 through the through hole 815 , and then is discharged from the opening end 811 c to the connection oil passage 163 ′.
- the oil passage 85 in the tubular member 8 B′ serves as a part of the in-case oil passage 16 . Accordingly, the flow of the lubricating oil OL in the in-case oil passage 16 can be smoothly changed.
- the chain continuously variable transmission 1 in which the endless annular member is the chain 43 is exemplified, but the invention is not limited to the aspect.
- a belt continuously variable transmission in which the endless annular member is a belt may be used.
- the belt include a belt in which a plurality of plate-shaped elements are stacked and annularly arranged. Specifically, the element includes slits on both sides. The belt is formed by binding each element by an annular ring having a slit inserted therethrough.
- the hydraulic actuation device is a chain continuously variable transmission for a vehicle
- the invention is not limited to the aspect.
- the hydraulic actuation device in which an oil passage is provided in a case, the hydraulic actuation device can also be applied to others in addition to the vehicle.
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Abstract
A hydraulic actuation device includes a case; an oil passage provided in the case; and a support member provided in the case and configured to support a supported member. The oil passage includes an opening portion that allows the oil passage to communicate with a space inside the case, the support member is inserted into the opening portion, and a communication between the oil passage and the space inside the case is blocked by the support member.
Description
- The present invention relates to a hydraulic actuation device.
-
Patent Literature 1 describes a chain guide provided in a chain continuously variable transmission, which is a hydraulic actuation device. The chain guide is attached to a case via a support member. -
-
- Patent Literature 1: JP2011-208796 A
- A plurality of oil passages are formed in this type of case.
- A part of the oil passage is open to the case. An opening of the oil passage is sealed by a sealing member.
- In the hydraulic actuation device, it is required to reduce an increase in the number of components.
- A hydraulic actuation device according to an aspect of the invention includes:
-
- a case;
- an oil passage provided in the case; and
- a support member provided in the case and configured to support a supported member.
- The oil passage has an opening portion that allows the oil passage to communicate with a space inside the case,
-
- the support member is inserted into the opening portion, and
- a communication between the oil passage and the space inside the case is blocked by the support member.
- According to an aspect of the invention, an increase in the number of components can be reduced.
-
FIG. 1 is a diagram illustrating a continuously variable transmission according to the present embodiment. -
FIG. 2 is a diagram illustrating a case. -
FIG. 3 is a diagram illustrating the case. -
FIG. 4 is a diagram illustrating the case. -
FIG. 5 is a diagram illustrating an arrangement of chain guides in a variator. -
FIG. 6 is a diagram illustrating the chain guide. -
FIG. 7 is a diagram illustrating a tubular member. -
FIG. 8 is a diagram illustrating the tubular member. -
FIG. 9 is a diagram illustrating the tubular member. -
FIG. 10 is a diagram illustrating an arrangement of tubular members. -
FIG. 11 is a diagram illustrating a rib. -
FIG. 12 is a diagram illustrating an in-case oil passage. -
FIG. 13 is a diagram illustrating the in-case oil passage. -
FIG. 14 is a diagram illustrating a continuously variable transmission according to a modification. - Hereinafter, a chain continuously variable transmission for a vehicle will be described as an application example of a hydraulic actuation device according to an aspect of the invention.
-
FIG. 1 is a diagram illustrating a continuouslyvariable transmission 1. - In the continuously
variable transmission 1, a rotational driving force of an engine (not illustrated) is input to avariator 4 via atorque converter 2 and a forward andreverse switching mechanism 3. The rotational driving force is transmitted to a driving wheel (not illustrated) via areduction gear 5 and a differential device 6 after being shifted by thevariator 4. - The
variator 4 includes a pair of pulleys (aprimary pulley 41 and a secondary pulley 42) and achain 43 wound around the pair of pulleys. Thechain 43 is an endless annular member in which a plurality of link plates (not illustrated) are coupled by rocker pins (not illustrated). - The
primary pulley 41 and thesecondary pulley 42 are provided rotatably about rotation axes X1 and X2 that are parallel to each other. - The
primary pulley 41 includes afixed pulley 411, and amovable pulley 415 that can be displaced in a direction of the rotation axis X1. - The
fixed pulley 411 and themovable pulley 415 respectively includesheave portions sheave portions sheave surfaces sheave surfaces - In the
primary pulley 41, a V groove around which thechain 43 is wound is provided between thesheave surfaces - In the
primary pulley 41, a groove width of the V groove is changed by the displacement of themovable pulley 415 in the direction of the rotation axis X1, and a winding radius of thechain 43 in theprimary pulley 41 is changed. - The
secondary pulley 42 also includes afixed pulley 421, and amovable pulley 425 that can be displaced in a direction of the rotation axis X2. - The
fixed pulley 421 and themovable pulley 425 respectively includesheave portions sheave portions sheave surfaces sheave surfaces - In the
secondary pulley 42, a V groove around which thechain 43 is wound is provided between thesheave surfaces - In the
secondary pulley 42, a groove width of the V groove is changed by the displacement of themovable pulley 425 in the direction of the rotation axis X2, and a winding radius of thechain 43 in thesecondary pulley 42 is changed. - The rotational driving force of the engine is input to the
primary pulley 41 via thetorque converter 2 and the forward andreverse switching mechanism 3. The rotational driving force input to theprimary pulley 41 is transmitted to thesecondary pulley 42 via thechain 43. - At this time, by changing the winding radii of the
chain 43 in theprimary pulley 41 and thesecondary pulley 42, the rotational driving force input to theprimary pulley 41 is shifted and transmitted to thesecondary pulley 42. - The rotational driving force transmitted to the
secondary pulley 42 is transmitted to thereduction gear 5. Thereduction gear 5 is provided rotatably about a rotation axis X3 parallel to the rotation axis X2. Afinal gear 60 of the differential device 6 meshes with thereduction gear 5 so as to transmit rotation. - Accordingly, the rotational driving force transmitted from the
secondary pulley 42 to thereduction gear 5 is transmitted to the differential device 6 via thefinal gear 60. Then, adrive shaft 61 coupled to the differential device 6 rotates about a rotation axis X4 parallel to the rotation axis X3. Then, a drive wheel (not illustrated) to which thedrive shaft 61 is coupled is rotated by the transmitted rotational driving force. - The
torque converter 2, the forward andreverse switching mechanism 3, thevariator 4, thereduction gear 5, and the differential device 6 are accommodated in a transmission case 10 (seeFIG. 1 ). - The
transmission case 10 includes aconverter housing 11, acase 12, and aside cover 13. Theconverter housing 11, thecase 12, and theside cover 13 are stacked in order in the direction of the rotation axis X1. - As illustrated in
FIG. 1 , theconverter housing 11 accommodates thetorque converter 2. Theconverter housing 11 is attached to an engine block (not illustrated) in the direction of the rotation axis X1. Theconverter housing 11 and the engine block are fixed by a bolt (not illustrated). - The
case 12 accommodates the forward andreverse switching mechanism 3, thevariator 4, thereduction gear 5, and the differential device 6. Thecase 12 is attached to theconverter housing 11 in the direction of the rotation axis X1. Thecase 12 and theconverter housing 11 are fixed by a bolt B. - The side cover 13 is attached to the
case 12 in the direction of the rotation axis X1. Theside cover 13 and thecase 12 are fixed by the bolt B. -
FIG. 2 is a perspective view of thecase 12 as viewed from aside cover 13 side. -
FIG. 3 is a front view of thecase 12 as viewed from theside cover 13 side. -
FIG. 4 is a front view of thecase 12 as viewed from aconverter housing 11 side. - In
FIG. 3 , thevariator 4 is indicated by imaginary lines. InFIG. 4 , the forward andreverse switching mechanism 3, thereduction gear 5, and thefinal gear 60 are indicated by imaginary lines. - In
FIG. 3 , in order to facilitate understanding of a position of a joining surface with theside cover 13, the joining surface is hatched. InFIG. 4 , in order to facilitate understanding of a joining surface with theconverter housing 11 and positions of arc-shapedwalls walls - As illustrated in
FIG. 2 , thecase 12 includes anintermediate wall portion 125. Theintermediate wall portion 125 is formed in an internal space of thecase 12. Theintermediate wall portion 125 is formed in an orientation intersecting the rotation axes X1 and X2. The internal space of thecase 12 is divided into a space S1 (seeFIG. 3 ) and a space S2 (seeFIG. 4 ) by theintermediate wall portion 125. The space S1 is located on one side (theside cover 13 side) of theintermediate wall portion 125 in the direction of the rotation axes X1 and X2, and the space S2 is located on the other side (theconverter housing 11 side). - As illustrated in
FIG. 3 , the space S1 is a space in a recess formed by surrounding theintermediate wall portion 125 with anannular wall 121. As illustrated inFIG. 4 , the space S2 is a space in a recess formed by surrounding theintermediate wall portion 125 with anannular wall 122. Theannular wall 121 and theannular wall 122 extend in directions away from each other from the intermediate wall portion 125 (a front-rear direction in the paper inFIG. 2 ). - The
variator 4 is accommodated in the space S1 of the case 12 (see the imaginary lines inFIG. 3 ). The forward andreverse switching mechanism 3, thereduction gear 5, and the differential device 6 (final gear 60) are accommodated in the space S2 of the case 12 (see the imaginary lines inFIG. 4 ). - As illustrated in
FIG. 3 , throughholes intermediate wall portion 125 of thecase 12. The throughholes primary pulley 41 and thesecondary pulley 42. The space S1 and the space S2 communicate with each other via the throughholes - As illustrated in
FIG. 4 , a throughhole 125 c is formed in theintermediate wall portion 125 of thecase 12. The throughhole 125 c is formed in a region intersecting the rotation axis X4 of thefinal gear 60. The space S2 also communicates with a region outside the annular wall 121 (a region outside the space S1) through the throughhole 125 c (seeFIG. 3 ). - As illustrated in
FIG. 4 , on a space S2 side of theintermediate wall portion 125, the arc-shapedwall 123 surrounding the throughhole 125 a and the arc-shapedwall 124 surrounding the throughhole 125 c are formed. A region surrounded by the arc-shapedwall 123 in the space S2 constitutes an accommodation chamber R1 accommodating the forward andreverse switching mechanism 3. A region surrounded by the arc-shapedwall 124 in the space S2 constitutes a differential chamber R2 accommodating thefinal gear 60. - As illustrated in
FIG. 3 , thevariator 4 is accommodated in the space S1 of thecase 12. Thechain 43 is wound around theprimary pulley 41 and thesecondary pulley 42 in the space S1. - In a region between the
primary pulley 41 and thesecondary pulley 42, thechain 43 tends to vibrate because thechain 43 is not in contact with the sheave surfaces 412 a and 416 a (seeFIG. 1 ) or the sheave surfaces 422 a and 426 a (seeFIG. 1 ). Therefore, the continuouslyvariable transmission 1 includes chain guides 9A and 9B (seeFIG. 5 ) for reducing the vibration of thechain 43. -
FIG. 5 is a diagram illustrating an arrangement of the chain guides 9A and 9B in thevariator 4. -
FIG. 5 corresponds to thevariator 4 indicated by the imaginary lines inFIG. 3 . In addition, inFIG. 5 , for convenience of description, thechain guide 9A is illustrated in a schematic view of a cross section thereof, and thechain guide 9B is illustrated in a side view. Further, thechain 43 is illustrated in a simplified manner. - As illustrated in
FIG. 5 , the chain guides 9A and 9B are arranged in a region in which thechain 43 is not wound around theprimary pulley 41 and thesecondary pulley 42. - The chain guides 9A and 9B are arranged in a symmetrical positional relationship with respect to a straight line Lm1. The straight line Lm1 is a line connecting the rotation axis X1 of the
primary pulley 41 and the rotation axis X2 of thesecondary pulley 42. - The
chain guide 9A and thechain guide 9B are respectively disposed on an upper side and a lower side of the straight line Lm1 in a direction of a vertical line VL. The vertical line VL is a line based on a state where the continuouslyvariable transmission 1 is mounted on the vehicle. - As illustrated in
FIG. 5 , thechain guide 9A is swingably coupled to a chainguide support shaft 7A. Thechain guide 9B is swingably coupled to a chainguide support shaft 7B. The chainguide support shafts - When viewed from the direction of the rotation axes X1 and X2, the chain
guide support shafts chain 43. The chainguide support shafts tubular members - The chain guides 9A and 9B according to the present embodiment have the same shape. In the following description, the
chain guide 9B will be described as an example. Description of thechain guide 9A will be omitted. -
FIG. 6 is a diagram illustrating thechain guide 9B and is a perspective view of thechain guide 9B as viewed from anintermediate wall portion 125 side. InFIG. 6 , atubular member 8B is separated from the chainguide support shaft 7B. -
FIG. 7 is a perspective view illustrating thetubular member 8B. -
FIG. 8 is a diagram illustrating thetubular member 8B and is a schematic view of a cross section obtained by cutting thetubular member 8B ofFIG. 7 along a longitudinal direction thereof. -
FIG. 9 is a diagram illustrating thetubular member 8B and is a schematic view of an A-A cross section inFIG. 8 . -
FIG. 10 is a diagram illustrating an arrangement of thetubular members FIG. 5 . - As illustrated in
FIG. 6 , thechain guide 9B includes a pair ofguide members guide members chain guide 9B is formed with theguide members - The
guide member 91R includes guide portions 910Ra and 910Rb and aconnection portion 911R that connects the guide portions 910Ra and 910Rb to each other. The guide portions 910Ra and 910Rb are arranged on one side and the other side in a thickness direction (an up-down direction inFIG. 6 ) of thechain 43. Theconnection portion 911R is disposed on a lateral side (a right side inFIG. 6 ) of thechain 43. - The guide portions 910Ra and 910Rb and the
connection portion 911R of theguide member 91R are integrally formed of the same material. The guide portions 910Ra and 910Rb are plate-shaped members arranged along a longitudinal direction of thechain 43. Theconnection portion 911R connects central portions of the guide portions 910Ra and 910Rb in a longitudinal direction to each other. - The
guide member 91L includes guide portions 910La and 910Lb and aconnection portion 911L that connects the guide portions 910La and 910Lb to each other. The guide portions 910La and 910Lb are arranged on one side and the other side in the thickness direction (the up-down direction inFIG. 6 ) of thechain 43. Theconnection portion 911L is disposed on a lateral side (a left side inFIG. 6 ) of thechain 43. - The guide portions 910La and 910Lb and the
connection portion 911L of theguide member 91L are integrally formed of the same material. The guide portions 910La and 910Lb are plate-shaped members arranged along the longitudinal direction of thechain 43. Theconnection portion 911L connects central portions of the guide portions 910La and 910Lb in a longitudinal direction to each other. - The
guide members chain 43 in the longitudinal direction thereof. - The
chain 43 is disposed in a space surrounded by the guide portions 910Ra and 910Rb and theconnection portion 911R of theguide member 91R and the guide portions 910La and 910Lb and theconnection portion 911L of theguide member 91L. - Here, the
guide members coupling portions guide support shaft 7B. Thecoupling portions - The
coupling portions coupling portions guide members - [Chain
Guide Support Shaft 7B] - As illustrated in
FIG. 6 , the chainguide support shaft 7B is a shaft-shaped member disposed in an orientation along an axis line Lx2 parallel to the rotation axes X1 and X2. The chainguide support shaft 7B includes a small-diameter shaft portion 70 and a large-diameter shaft portion 71. - As illustrated in
FIG. 10 , in the chainguide support shaft 7B, the small-diameter shaft portion 70 is oneend 7 a side (a left side in the diagram) in a direction of the axis line Lx2, and the large-diameter shaft portion 71 is on theother end 7 b side (a right side in the diagram). A steppedsurface 73 is formed at a boundary between the small-diameter shaft portion 70 and the large-diameter shaft portion 71. The steppedsurface 73 is a flat surface orthogonal to the axis line Lx2. - The small-
diameter shaft portion 70 of the chainguide support shaft 7B is inserted into aninsertion hole 131 of the side cover 13 from the direction of the axis line Lx2. The steppedsurface 73 of the chainguide support shaft 7B abuts on aperipheral edge portion 131 a of theinsertion hole 131 from the direction of the axis line Lx2. - The large-
diameter shaft portion 71 of the chainguide support shaft 7B includes a flange-shapedsupport plate 711. Thesupport plate 711 is formed at an intermediate position of the large-diameter shaft portion 71 in the direction of the axis line Lx2. The intermediate position of the large-diameter shaft portion 71 is between one end and the other end of the large-diameter shaft portion 71 in the direction of the axis line Lx2. - The
support plate 711 extends radially outward of the axis line Lx2 from an outer periphery of the large-diameter shaft portion 71. Thesupport plate 711 surrounds the large-diameter shaft portion 71 over an entire circumference in a circumferential direction around the axis line Lx2 (seeFIG. 6 ). - As illustrated in
FIG. 10 , aninsertion hole 72 is opened in theother end 7 b of the chainguide support shaft 7B. Theinsertion hole 72 extends in the direction of the axis line Lx2 inside the large-diameter shaft portion 71. Thetubular member 8B is inserted into theinsertion hole 72 from the direction of the axis line Lx2 (seeFIG. 6 ). - [
Tubular Member 8B] - As illustrated in
FIG. 7 , thetubular member 8B is formed by bending one steel pipe at two locations between one end and the other end thereof in the longitudinal direction. - Specifically, as illustrated in
FIG. 8 , thetubular member 8B includes a firsttubular portion 80 disposed in the orientation along the axis line Lx2, and a secondtubular portion 81 disposed in an orientation along an axis line Lx3. The axis line Lx3 is parallel to the axis line Lx2. The firsttubular portion 80 and the secondtubular portion 81 are connected to each other via atubular connection portion 82. The firsttubular portion 80 is located on oneend 8 a side (a left side in the diagram) of thetubular member 8B in the longitudinal direction, and the secondtubular portion 81 is located on theother end 8 b side (a right side in the diagram). - As illustrated in
FIG. 8 , the firsttubular portion 80 includes abottom wall portion 802 orthogonal to the axis line Lx2, and atubular wall portion 801 surrounding an entire outer periphery of thebottom wall portion 802. - The
tubular wall portion 801 extends from thebottom wall portion 802 to the other side (a right side in the diagram) in the direction of the axis line Lx2. Thetubular wall portion 801 is connected to theconnection portion 82 on the other side in the direction of the axis line Lx2. - The
connection portion 82 is disposed in an orientation along an axis line La intersecting the axis line Lx2 and the axis line Lx3. Theconnection portion 82 is connected to the secondtubular portion 81 on a side opposite to the firsttubular portion 80 in a direction of the axis line La. - The second
tubular portion 81 includes atubular wall portion 811 surrounding the axis line Lx3. Thetubular wall portion 811 extends from theconnection portion 82 to the other side (the right side in the diagram) in a direction of the axis line Lx3. Thetubular wall portion 811 has anopening end 811 c at an end surface (theother end 8 b) on the other side in the direction of the axis line Lx3. - The
tubular member 8B has a bottomed tubular shape as a whole. Internal spaces of the firsttubular portion 80, theconnection portion 82, and the secondtubular portion 81 communicate with one another, and oneoil passage 85 is formed inside thetubular member 8B. One end of theoil passage 85 is sealed by thebottom wall portion 802 of the firsttubular portion 80. The other end of the oil passage 35 communicates with an outside through the openingend 811 c of the secondtubular portion 81. - As illustrated in
FIG. 8 , a flange-shapedsupport plate 803 is formed at the firsttubular portion 80 of thetubular member 8B. Thesupport plate 803 is formed at an intermediate position of thetubular wall portion 801 in the direction of the axis line Lx2. The intermediate position of thetubular wall portion 801 is between one end and the other end of thetubular wall portion 801 in the direction of the axis line Lx2. Thesupport plate 803 extends radially outward of the axis line Lx2 from an outer periphery of thetubular wall portion 801. Thesupport plate 803 surrounds thetubular wall portion 801 over the entire circumference in the circumferential direction around the axis line Lx2 (seeFIG. 9 ). - The
support plate 803 includes an inner-diameter side region 803 a and an outer-diameter side region 803 b in a radial direction (the up-down direction in the diagram) of the axis line Lx2. The inner-diameter side region 803 a is offset to the other side (the right side in the diagram) in the direction of the axis line Lx2 with respect to the outer-diameter side region 803 b. Thesupport plate 803 includes arecess 803 c inside the outer-diameter side region 803 b in the radial direction of the axis line Lx2. - As illustrated in
FIG. 8 , the secondtubular portion 81 includes a strip-shapedbracket 813. Thebracket 813 is formed at an intermediate position of thetubular wall portion 811 in the direction of the axis line Lx3. The intermediate position of thetubular wall portion 811 is between one end and the other end of thetubular wall portion 811 in the direction of the axis line Lx3. Thebracket 813 is fixed to thetubular wall portion 811 with a thickness direction being along the direction of the axis line Lx3. - As illustrated in
FIG. 9 , when viewed from the direction of the axis line Lx3, a straight line Lp along a longitudinal direction of thebracket 813 intersects the axis line Lx2 and the axis line Lx3. - The
tubular wall portion 811 is located on one side (an upper side in the diagram) of thebracket 813 in a direction of the straight line Lp. A throughhole 813 a penetrating thebracket 813 in the thickness direction thereof is formed on the other side (a lower side in the diagram) of thebracket 813 in the direction of the straight line Lp. - As illustrated in
FIG. 7 , a throughhole 815 penetrating thetubular wall portion 811 in the thickness direction thereof is formed in thetubular wall portion 811 of the secondtubular portion 81. The throughhole 815 is located on theother end 8 b side of thetubular member 8B. A distance between the throughhole 815 and thebracket 813 in the direction of the axis line Lx3 is set to T1. - As illustrated in
FIG. 9 , the throughhole 815 allows an outside of thetubular member 8B to communicate with theoil passage 85. In addition, when viewed from the direction of the axis line Lx3, the throughhole 815 is displaced from the straight line Lp in a circumferential direction around the axis line Lx3. A straight line Lq that connects the throughhole 815 and the axis line Lx3 is inclined with respect to the straight line Lp along the longitudinal direction of thebracket 813. - As illustrated in
FIG. 10 , the firsttubular portion 80 of thetubular member 8B is inserted into theinsertion hole 72 of the chainguide support shaft 7B from the direction of the axis line Lx2. - In addition, the second
tubular portion 81 of thetubular member 8B is inserted into aninsertion hole 128 formed in theintermediate wall portion 125. The secondtubular portion 81 is inserted into theinsertion hole 128 from the direction of the axis line Lx3. Aboss portion 129 is formed on theintermediate wall portion 125 of thecase 12. Thebracket 813 is fixed to theboss portion 129 with the bolt B from a direction of an axis line Lx4 parallel to the axis line Lx3. - The
insertion hole 128 and theboss portion 129 are formed below the straight line Lm1 in the intermediate wall portion 125 (seeFIG. 11 ). - In this state, the chain
guide support shaft 7B and thetubular member 8B are attached across theside cover 13 and thecase 12. The chainguide support shaft 7B and thetubular member 8B cross the space S1 in a direction along the axis line Lx2. - As illustrated in
FIG. 10 , thesupport plate 711 of the chainguide support shaft 7B and thesupport plate 803 of thetubular member 8B are spaced apart from each other in the direction of the axis line Lx2. Thecoupling portions chain guide 9B described above are arranged between thesupport plate 711 and thesupport plate 803 in the direction of the axis line Lx2. - Vibration of a
belt 43 is finally dispersed to thecase 12 and theside cover 13 through the chainguide support shaft 7B and thetubular member 8B after being received by thechain guide 9B. Accordingly, the vibration of thebelt 43 is reduced. - Here, as illustrated in
FIG. 10 , the firsttubular portion 80 of thetubular member 8B is inserted into theinsertion hole 72 of the chainguide support shaft 7B, and therecess 803 c of thesupport plate 803 accommodates theother end 7 b side of the chainguide support shaft 7B. Accordingly, thetubular member 8B supports the chainguide support shaft 7B while preventing the chainguide support shaft 7B itself from vibrating in the radial direction of the axis line Lx2 due to the vibration of thebelt 43. - That is, in a relationship between the
tubular member 8B and the chainguide support shaft 7B, thetubular member 8B serves as a support member, and the chainguide support shaft 7B serves as a supported member. - As illustrated in
FIG. 10 , thechain guide 9A also includes thecoupling portions chain guide 9A is coupled to the chainguide support shaft 7A via thecoupling portions - The chain
guide support shaft 7A is one shaft-shaped member and has the same basic shape as that of the chainguide support shaft 7B described above. - Hereinafter, the chain
guide support shaft 7A will be described. - In the following description, a portion of the chain
guide support shaft 7A different from the chainguide support shaft 7B will be described. The same portions as those of the chainguide support shaft 7B will be described with the same reference numerals. - As illustrated in
FIG. 10 , the chainguide support shaft 7A is disposed in an orientation along an axis line Lx5 parallel to the rotation axes X1 and X2 (seeFIG. 6 ). - The chain
guide support shaft 7A includes the small-diameter shaft portion 70 and the large-diameter shaft portion 71. The small-diameter shaft portion 70 is located on the oneend 7 a side of the chainguide support shaft 7A in a direction of the axis line Lx5, and the large-diameter shaft portion 71 is located on theother end 7 b side. - As illustrated in
FIG. 10 , the small-diameter shaft portion 70 of the chainguide support shaft 7A is inserted into aninsertion hole 132 of the side cover 13 from the direction of the axis line Lx5. The steppedsurface 73 of the chainguide support shaft 7A abuts on aperipheral edge portion 132 a of theinsertion hole 132 from the direction of the axis line Lx5. - An
oil passage 75 extending in the direction of the axis line Lx5 is formed inside the chainguide support shaft 7A. Theoil passage 75 penetrates the small-diameter shaft portion 70 and the large-diameter shaft portion 71 in the direction of the axis line Lx5. Theoil passage 75 is opened at oneend 7 a and theother end 7 b of the chainguide support shaft 7A. - As illustrated in
FIG. 10 , in the large-diameter shaft portion 71, aninjection hole 76 is formed in a region between thesupport plate 711 and theother end 7 b in the direction of the axis line Lx5. Theinjection hole 76 penetrates the large-diameter shaft portion 71 in a direction orthogonal to the axis line Lx5 and allows theoil passage 75 to communicate with the space S1. - The
tubular member 8A is inserted into theoil passage 75 of the chainguide support shaft 7A from theother end 7 b side. - The
tubular member 8A is formed by bending one steel pipe at two locations between one end and the other end thereof in the longitudinal direction and has the same basic shape as that of thetubular member 8B described above. - Hereinafter, the
tubular member 8A will be described. - In the following description, a portion of the
tubular member 8A different from thetubular member 8B will be described. The same portions as those of thetubular member 8B will be described with the same reference numerals. - The
tubular member 8A is different from thetubular member 8B in that thetubular member 8A does not include thebottom wall portion 802 of the firsttubular portion 80 and theoil passage 85 is opened at both ends in the longitudinal direction. In addition, thetubular member 8A is different from thetubular member 8B in that thetubular member 8A does not include the throughhole 815 in the secondtubular portion 81. - As illustrated in
FIG. 10 , in thetubular member 8A, the firsttubular portion 80 is inserted into theoil passage 75 of the chainguide support shaft 7A from the direction of the axis line Lx5. In thetubular member 8A, the secondtubular portion 81 is inserted into aninsertion hole 126 formed in theintermediate wall portion 125. The secondtubular portion 81 is inserted into theinsertion hole 126 from a direction of an axis line Lx6 parallel to the axis line Lx5. Thebracket 813 is fixed to aboss portion 127 formed on theintermediate wall portion 125 of thecase 12 with the bolt B. Theinsertion hole 126 and theboss portion 127 are formed above the straight line Lm1 in the intermediate wall portion 125 (seeFIG. 11 ). - In this state, the chain
guide support shaft 7A and thetubular member 8A are attached across theside cover 13 and thecase 12. The chainguide support shaft 7A and thetubular member 8A cross the space S1 in a direction along the axis line Lx5. - Here, as illustrated in
FIG. 10 , theinsertion hole 126 into which the secondtubular portion 81 of thetubular member 8A is inserted communicates with an in-case oil passage 15 in theintermediate wall portion 125. In addition, theinsertion hole 128 into which the secondtubular portion 81 of thetubular member 8B is inserted communicates with an in-case oil passage 16 in theintermediate wall portion 125. - The in-
case oil passages case 12, which is raised by the rotation of the final gear 60 (seeFIG. 4 ), to a predetermined region in thecase 12. - [In-Case Oil Passage 15]
- As illustrated in
FIG. 10 , the in-case oil passage 15 extends in the direction of the axis line Lx6 in theintermediate wall portion 125. Theother end 15 b of the in-case oil passage 15 in the direction of the axis line Lx6 is opened in the arc-shaped wall 123 (seeFIG. 4 ) in the space S2 side described above. Theinsertion hole 126 is connected to oneend 15 a of the in-case oil passage 15 in the direction of the axis line Lx6. - The
insertion hole 126 extends in the direction of the axis line Lx6. An end portion of theinsertion hole 126 on a side (a space S1 side) opposite to the in-case oil passage 15 in the direction of the axis line Lx6 is opened in a surface of the intermediate wall portion 125 (seeFIG. 11 ). The in-case oil passage 15 communicates with the space S1 via theinsertion hole 126. Theinsertion hole 126 constitutes a part of the in-case oil passage 15. - The first
tubular portion 80 of thetubular member 8A is inserted into theoil passage 75 in the chainguide support shaft 7A, and the secondtubular portion 81 is inserted into theinsertion hole 126. Accordingly, theoil passage 85 in thetubular member 8A communicates with theoil passage 75 of the chainguide support shaft 7A on a firsttubular portion 80 side and communicates with the in-case oil passage 15 on a secondtubular portion 81 side. - An
oil passage 135 formed in theside cover 13 communicates with theinsertion hole 132 of theside cover 13 into which the small-diameter shaft portion 70 of the chainguide support shaft 7A is inserted. - Therefore, the in-
case oil passage 15 communicates with theoil passage 135 of theside cover 13 via theoil passage 85 in thetubular member 8A and theoil passage 75 in the chainguide support shaft 7A. - Accordingly, a part of the lubricating oil OL that is raised by the rotation of the
final gear 60 flows from theother end 15 b (seeFIG. 4 ) of the in-case oil passage 15 and is supplied from the oneend 15 a to theoil passage 85 in thetubular member 8A. Then, the lubricating oil OL supplied to theoil passage 85 finally moves to theoil passage 135 in theside cover 13 through theoil passage 75 in the chainguide support shaft 7A. A part of the lubricating oil OL passing through theoil passage 75 is injected from theinjection hole 76 to lubricate thechain 43. - [In-Case Oil Passage 16]
- The in-
case oil passage 16 is formed in a rib 18 (seeFIG. 2 ) provided on theintermediate wall portion 125. Therib 18 protrudes from theintermediate wall portion 125 to the space S1 side (a front side in the paper inFIG. 2 ) in the direction of the rotation axes X1 and X2. -
FIG. 11 is a diagram illustrating therib 18 and is an enlarged view of a region A inFIG. 3 . -
FIG. 12 is a diagram illustrating the in-case oil passage 16 formed in therib 18 and is a schematic view of an A-A cross section inFIG. 11 . -
FIG. 13 is a diagram illustrating an arrangement of thetubular member 8B. - In
FIG. 12 , thetubular member 8B is indicated by imaginary lines. In addition, inFIGS. 12 and 13 , thefinal gear 60 in the differential chamber R2 is omitted. - As illustrated in
FIG. 11 , therib 18 protrudes from theintermediate wall portion 125 to the front side in the paper. Therib 18 is located below the straight line Lm1 connecting the rotation axis X1 and the rotation axis X2. Therib 18 is provided in an orientation along a straight line Lr. The straight line Lr is a line substantially parallel to a straight line Lm2 connecting the rotation axis X1 and the rotation axis X4. Therib 18 crosses theannular wall 121 from an inner side to an outer side. Oneend portion 18 a (a left side in the diagram) of therib 18 in a direction of the straight line Lr is located in the space S1 and is located in a vicinity of the throughhole 125 a. Theother end 18 b (a right side in the diagram) of therib 18 in the direction of the straight line Lr is located outside the space S1 and is located in a vicinity of the throughhole 125 c. - The
insertion hole 128 and theboss portion 129 described above are formed on oneend portion 18 a side (the left side in the diagram) of therib 18. Theinsertion hole 128 is located on the straight line Lr. Theboss portion 129 is located below the straight line Lr on theother end 18 b side of therib 18 when viewed from theinsertion hole 128. - As illustrated in
FIG. 12 , the in-case oil passage 16 is formed in therib 18. - When viewed from the direction of the rotation axis X4, the in-
case oil passage 16 extends in a radial direction of the rotation axis X4 in a region overlapping the differential chamber R2. InFIG. 4 , a position of the in-case oil passage 16 is indicated by a broken line. - As illustrated in
FIG. 12 , the in-case oil passage 16 includes an outer-diameterside oil passage 161, an inner-diameterside oil passage 162, and aconnection oil passage 163. - The outer-diameter
side oil passage 161 is provided in an orientation along the rotation axis X4. Oneend 161 a of the outer-diameterside oil passage 161 communicates with theinsertion hole 128. The other end 161 b of the outer-diameterside oil passage 161 is opened in the arc-shapedwall 123 described above (seeFIG. 4 ). - The
insertion hole 128 communicating with the oneend 161 a of the outer-diameterside oil passage 161 is provided in series with the outer-diameterside oil passage 161 in the orientation along the rotation axis X4. Theinsertion hole 128 and the outer-diameterside oil passage 161 are concentrically arranged. - An end portion of the
insertion hole 128 on a side opposite to the outer-diameterside oil passage 161 in the direction of the rotation axis X4 (a lower side inFIG. 12 ) is opened in the surface of the intermediate wall portion 125 (the rib 18). The outer-diameterside oil passage 161 of the in-case oil passage 16 communicates with the space S1 via theinsertion hole 128. Theinsertion hole 128 constitutes a part of the in-case oil passage 16. - One
end 163 a of theconnection oil passage 163 is opened at an intermediate position of theinsertion hole 128 in the direction of the rotation axis X4. The intermediate position of theinsertion hole 128 is between one end and the other end of theinsertion hole 128 in the direction of the rotation axis X4. - The
connection oil passage 163 extends in therib 18 in the direction of the straight line Lr (a left-right direction inFIG. 12 ). Theother end 163 b of theconnection oil passage 163 opens toward an outside of theannular wall 121. An opening of theother end 163 b is sealed with a plug Hs. Examples of the plug Hs include a known hollow set. - One
end 162 a of the inner-diameterside oil passage 162 is opened on theother end 163 b side of theconnection oil passage 163. - The inner-diameter
side oil passage 162 is located radially inward of the outer-diameterside oil passage 161 in the radial direction of the rotation axis X4. The inner-diameterside oil passage 162 extends in the direction of the rotation axis X4, and theother end 162 b is opened to the differential chamber R2 (seeFIG. 4 ). - Here, as illustrated in an enlarged region in
FIG. 11 , a straight line Ls connecting theinsertion hole 128 and theboss portion 129 is inclined with respect to the straight line Lr. - The inclination of the straight line Lr with respect to the straight line Ls is the same as the inclination (see
FIG. 9 ) of the straight line Lq with respect to the straight line Lp in thebracket 813 of thetubular member 8B described above. - In addition, as illustrated in
FIG. 12 , a distance between a surface of therib 18 and the straight line Lr in the direction of the rotation axis X4 is set to T2. The distance T2 is the same as the distance T1 (seeFIG. 7 ) between thebracket 813 of thetubular member 8B and the throughhole 815 described above (T2=T1). - As illustrated in
FIG. 13 , the secondtubular portion 81 of thetubular member 8B is inserted into theinsertion hole 128. Theoil passage 85 in thetubular member 8B communicates with the outer-diameterside oil passage 161 via the openingend 811 c. - Then, as illustrated in the enlarged region of
FIG. 11 , in a state where the secondtubular portion 81 is inserted into theinsertion hole 128, thebracket 813 is fixed to theboss portion 129. The straight line Lp (seeFIG. 9 ) along the longitudinal direction of thebracket 813 is disposed at a position that coincides with the straight line Ls connecting theinsertion hole 128 and theboss portion 129. - In this state, the straight line Lq (see
FIG. 9 ) connecting a center of the secondtubular portion 81 and the throughhole 815 coincides with the straight line Lr passing through a center of theconnection oil passage 163. - Accordingly, the internal space of the second
tubular portion 81 communicates with theconnection oil passage 163 via the throughhole 815. Therefore, theoil passage 85 in thetubular member 8B communicates with theconnection oil passage 163 via the through hole 815 (see the enlarged region inFIG. 13 ). - As described above, the
insertion hole 128 constitutes a part of the in-case oil passage 16. Therefore, by inserting thetubular member 8B into theinsertion hole 128, theoil passage 85 in thetubular member 8B also constitutes a part of the in-case oil passage 16. Theoil passage 85 serves as an oil passage interposed between the outer-diameterside oil passage 161 and the connection oil passage 163 (seeFIG. 13 ). - A part of the lubricating oil OL that is raised by the rotation of the
final gear 60 flows from the other end 161 b (seeFIG. 4 ) of the outer-diameterside oil passage 161, and moves from an oneend 161 a side into theoil passage 85 in thetubular member 8B (an arrow A inFIG. 13 ). - One end (a lower side in
FIG. 13 ) of theoil passage 85 is sealed by thebottom wall portion 802. Then, the lubricating oil OL sequentially flows into theoil passage 85 from an openingend 811 c side. Therefore, an inside of theoil passage 85 is finally filled with the lubricating oil OL. - When the
oil passage 85 is filled with the lubricating oil OL and the lubricating oil OL further flows into theoil passage 85 from the openingend 811 c side, a pressure in theoil passage 85 increases. The lubricating oil OL is discharged from the throughhole 815 to theconnection oil passage 163. Accordingly, a flow of the lubricating oil OL that flows from the outer-diameterside oil passage 161 to theconnection oil passage 163 through theoil passage 85 is formed (an arrow B inFIG. 13 ). - The lubricating oil OL moved from the through
hole 815 to theconnection oil passage 163 moves from oneend 163 a side to theother end 163 b side through the connection oil passage 163 (an arrow C inFIG. 13 ). - The
other end 163 b of theconnection oil passage 163 is sealed with the plug Hs. Therefore, an orientation of the lubricating oil OL that moves through theconnection oil passage 163 is changed by the plug Hs, and the lubricating oil OL moves from the oneend 162 a to the inside of the inner-diameterside oil passage 162. - The lubricating oil OL passing through the inner-diameter
side oil passage 162 is returned from theother end 162 b to the differential chamber R2 (an arrow D inFIG. 13 ). The lubricating oil OL returned to the differential chamber R2 is again raised by the rotation of the final gear 60 (seeFIG. 4 ). - Here, the
case 12 is manufactured by casting. Although not illustrated, the in-case oil passages case 12 are formed by placing cores at predetermined positions in a mold at the time of casting thecase 12 and then pouring and solidifying molten metal. The cores have shapes corresponding to the in-case oil passages - In order to maintain attitudes of the cores in the mold, a part of the cores is abutted on the mold. Therefore, in the
case 12 after solidification, portions where the cores and the mold are abutted appear as opening portions of the in-case oil passages - As illustrated in
FIG. 11 , in the present embodiment, the insertion holes 126 and 128 and theother end 163 b side (seeFIG. 12 ) of theconnection oil passage 163 correspond to the opening portions of the in-case oil passages - The in-
case oil passage 15 is used to supply the lubricating oil OL to avariator 4 side. Therefore, theinsertion hole 126 serving as the opening portion of the in-case oil passage 15 is used in an open state. - On the other hand, the in-
case oil passage 16 is used to return the lubricating oil OL to the differential chamber R2. In order to reliably return the lubricating oil OL to the differential chamber R2, theinsertion hole 128 serving as the opening portion of the in-case oil passage 16 and theother end 163 b side of theconnection oil passage 163 are sealed with a sealing member. - As illustrated in
FIG. 13 , thetubular member 8B is inserted into theinsertion hole 128. The plug Hs is inserted into theother end 163 b of theconnection oil passage 163. In the present embodiment, each of thetubular member 8B and the plug Hs corresponds to the sealing member. - For example, when the
tubular member 8B is attached to a place other than theinsertion hole 128 in thecase 12, a plug for sealing theinsertion hole 128 is separately prepared. Then, the number of plugs (the number of components) to be used increases. - On the other hand, the
tubular member 8B according to the present embodiment is inserted into theinsertion hole 128 in the case 12 (seeFIG. 13 ). Accordingly, thetubular member 8B supports the chainguide support shaft 7B and blocks the communication between the in-case oil passage 16 and the space S1 implemented via theinsertion hole 128. - That is, the
tubular member 8B serves both as a support member and a plug. The plug for sealing theinsertion hole 128 may not be separately used. - Even if a solid shaft member not including the
oil passage 85 and the throughhole 815 is used instead of thetubular member 8B, the shaft member can both serve as the support member for the chainguide support shaft 7B and the plug for theinsertion hole 128. However, when the shaft member is inserted into theinsertion hole 128, the flow of the lubricating oil OL from the outer-diameterside oil passage 161 to theconnection oil passage 163 may be hindered. In this case, it is also conceivable to shallowly insert the shaft member into theinsertion hole 128 such that the lubricating oil OL can flow. However, a support strength for supporting the chainguide support shaft 7B is reduced. - The
tubular member 8B according to the present embodiment is a hollow steel pipe and includes theoil passage 85 and the throughhole 815. In thetubular member 8B, theoil passage 85 and the throughhole 815 constitute a part of the in-case oil passage 16. Therefore, even if thetubular member 8B is deeply inserted into theinsertion hole 128, the flow of the lubricating oil OL in the in-case oil passage 16 is not hindered. Accordingly, the support strength for supporting the chainguide support shaft 7B can be improved. - An example of the continuously variable transmission 1 (the hydraulic actuation device) according to an aspect of the invention will be listed below.
-
- (1) The continuously
variable transmission 1 includes: - the
case 12; - the in-case oil passage 16 (an oil passage) provided in the
case 12; and - the
tubular member 8B (a support member) that is provided in thecase 12 and supports the chainguide support shaft 7B (a supported member).
- (1) The continuously
- The in-
case oil passage 16 includes the insertion hole 128 (an opening portion) that allows the in-case oil passage 16 to communicate with the space S1 inside thecase 12. - The
tubular member 8B is inserted into theinsertion hole 128. - The communication between the in-
case oil passage 16 and the space S1 inside thecase 12 is blocked by thetubular member 8B. - When configured as described above, the
tubular member 8B can seal theinsertion hole 128 while supporting the chainguide support shaft 7B. - Accordingly, it is not necessary to use the support member for supporting the chain
guide support shaft 7B and the plug for sealing theinsertion hole 128, thereby reducing the number of components. -
- (2) The
tubular member 8B inserts the secondtubular portion 81 into theinsertion hole 128 from the direction of the axis line Lx3. Thetubular member 8B is fixed to thecase 12 in a state where a tightening force (a pressing force) of the bolt B (a fastening member) is applied along the direction of the axis line Lx4 parallel to the direction of the axis line Lx3 (an insertion direction).
- (2) The
- The
tubular member 8B receives a pressure from the lubricating oil OL that flows into theoil passage 85 from the outer-diameterside oil passage 161 of the in-case oil passage 16. This pressure acts in a direction in which thetubular member 8B is pulled out from the insertion hole 128 (downward inFIG. 13 ). - Therefore, when configured as described above, the fastening force of the bolt B applied to the
tubular member 8B is in a direction against the pressure received from the lubricating oil OL. - Accordingly, the
tubular member 8B is prevented from being pulled out from theinsertion hole 128, and sealing performance of theinsertion hole 128 by thetubular member 8B can be improved. -
- (3) The in-
case oil passage 16 is a lubricating oil passage for supplying the lubricating oil OL to the differential chamber R2.
- (3) The in-
- The
insertion hole 128 provided in the in-case oil passage 16 is sealed by thetubular member 8B. - When the
insertion hole 128 is opened on the space S1 side, a part of the lubricating oil OL in the in-case oil passage 16 leaks to the space S1 side. Then, an amount of the lubricating oil OL returned to the differential chamber R2 decreases. In addition, when theinsertion hole 128 is sealed with a separate plug, the number of components increases. - Therefore, by configuring as described above, the increase in the number of components can be reduced while reliably returning the lubricating oil OL, which is raised by the rotation of the
final gear 60, to the differential chamber R2. -
- (4) The continuously
variable transmission 1 includes: - the
primary pulley 41 and thesecondary pulley 42 that constitute a pair of pulleys; and - the chain 43 (an endless annular member) wound around the
primary pulley 41 and thesecondary pulley 42.
- (4) The continuously
- The
chain guide 9B coupled to the chainguide support shaft 7B is a guide member that guides thechain 43. - The
tubular member 8B supports the chainguide support shaft 7B coupled to thechain guide 9B. - When configured as described above, in the chain continuously
variable transmission 1, the number of components to be used can be reduced. -
- (5) The
tubular member 8B has a bottomed tubular shape, and includes thebottom wall portion 802, the firsttubular portion 80 surrounding thebottom wall portion 802, theconnection portion 82, and the secondtubular portion 81.
- (5) The
- In the
tubular member 8B, the throughhole 815 penetrating thetubular wall portion 811 is formed in the tubular wall portion 811 (a side wall) of the secondtubular portion 81. - The
tubular member 8B is inserted into theinsertion hole 128 from the openingend 811 c side of the secondtubular portion 81, and the throughhole 815 communicates with theconnection oil passage 163 of the in-case oil passage 16. - The lubricating oil OL in the in-
case oil passage 16 flows into the oil passage 85 (an internal space) of thetubular member 8B from the outer-diameterside oil passage 161 through the openingend 811 c, and then is discharged from the throughhole 815 to theconnection oil passage 163. - When configured as described above, the
oil passage 85 in thetubular member 8B serves as a part of the in-case oil passage 16. Accordingly, the flow of the lubricating oil OL in the in-case oil passage 16 can be smoothly changed. - In addition, even if the tubular member 8 is deeply inserted into the
insertion hole 128, the flow of the lubricating oil OL is not hindered. Accordingly, the support strength for supporting the chainguide support shaft 7B can be improved. - In a
support structure 100 in the case 12 (seeFIG. 13 ) for thetubular member 8B, onetubular member 8B can support the chainguide support shaft 7B and seal theinsertion hole 128. - The
support structure 100 of thetubular member 8B includes: -
- the
case 12; - the in-
case oil passage 16 provided in thecase 12; and - the
tubular member 8B that is provided in thecase 12 and supports the chainguide support shaft 7B.
- the
- The in-
case oil passage 16 includes theinsertion hole 128 that allows the in-case oil passage 16 to communicate with the space S1 inside thecase 12. - The
tubular member 8B is inserted into theinsertion hole 128. - The
tubular member 8B is supported by thecase 12 while blocking the communication between the in-case oil passage 16 and the space S1 inside thecase 12. - When configured as described above, the
tubular member 8B can seal theinsertion hole 128 while supporting the chainguide support shaft 7B. - Accordingly, it is not necessary to use the support member for supporting the chain
guide support shaft 7B and the plug for sealing theinsertion hole 128, thereby reducing the number of components. - In the continuously
variable transmission 1 according to the present embodiment, a case in which the openingend 811 c of thetubular member 8B communicates with the outer-diameterside oil passage 161 of the in-case oil passage 16, and the throughhole 815 communicates with theconnection oil passage 163 is exemplified, but the invention is not limited to the aspect. For example, the following modification may be made. -
FIG. 14 is a diagram illustrating a continuouslyvariable transmission 1A according to a modification. - In the continuously
variable transmission 1A according to the modification, only a portion different from the continuouslyvariable transmission 1 according to the present embodiment will be described. - As illustrated in
FIG. 14 , in the continuouslyvariable transmission 1A, aninsertion hole 128A extends in a direction of a straight line Lr′ orthogonal to the axis line Lx2 and is connected in series with aconnection oil passage 163′. The outer-diameterside oil passage 161 is connected to an intermediate position of theinsertion hole 128A in the direction of the straight line Lr′. The intermediate position of theinsertion hole 128A is between one end and the other end of theinsertion hole 128A in the direction of the straight line Lr′. - A
tubular member 8B′ is formed by bending one steel pipe at one location between one end and the other end in a longitudinal direction thereof and has a substantially L-shape. - Specifically, the
tubular member 8B′ includes the firsttubular portion 80 disposed in the orientation along the straight line Lx2, and a secondtubular portion 81′ disposed in an orientation along the straight line Lr′. - When the second
tubular portion 81′ of thetubular member 8B′ is inserted into theinsertion hole 128A, the throughhole 815 communicates with the outer-diameterside oil passage 161 of the in-case oil passage 16, and the openingend 811 c communicates with theconnection oil passage 163′. - In the continuously
variable transmission 1A according to the modification, the lubricating oil OL flows into theoil passage 85 in thetubular member 8B′ from the outer-diameterside oil passage 161 through the throughhole 815. The lubricating oil OL is discharged from the openingend 811 c to theconnection oil passage 163′. Then, the lubricating oil OL is discharged from theconnection oil passage 163′ to the differential chamber R2 through the inner-diameter side oil passage 162 (see arrows E to H inFIG. 14 ). - As an aspect of the invention, the continuously
variable transmission 1A has, for example, the following configuration. -
- (5) The
tubular member 8B′ has a bottomed tubular shape.
- (5) The
- In the
tubular member 8B′, the throughhole 815 penetrating thetubular wall portion 811 is formed in the tubular wall portion 811 (a side wall) of the secondtubular portion 81′. - The
tubular member 8B′ is inserted into theinsertion hole 128A from the openingend 811 c side of the secondtubular portion 81, and the throughhole 815 communicates with the outer-diameterside oil passage 161 of the in-case oil passage 16. - The lubricating oil OL in the in-
case oil passage 16 flows into theoil passage 85 in thetubular member 8B′ from the outer-diameterside oil passage 161 through the throughhole 815, and then is discharged from the openingend 811 c to theconnection oil passage 163′. - When configured as described above, the
oil passage 85 in thetubular member 8B′ serves as a part of the in-case oil passage 16. Accordingly, the flow of the lubricating oil OL in the in-case oil passage 16 can be smoothly changed. - In the present embodiment, the chain continuously
variable transmission 1 in which the endless annular member is thechain 43 is exemplified, but the invention is not limited to the aspect. For example, a belt continuously variable transmission in which the endless annular member is a belt may be used. Examples of the belt include a belt in which a plurality of plate-shaped elements are stacked and annularly arranged. Specifically, the element includes slits on both sides. The belt is formed by binding each element by an annular ring having a slit inserted therethrough. - In the present embodiment, a case in which the hydraulic actuation device is a chain continuously variable transmission for a vehicle is exemplified, but the invention is not limited to the aspect. In a case of a hydraulic actuation device in which an oil passage is provided in a case, the hydraulic actuation device can also be applied to others in addition to the vehicle.
- Although the embodiment of the invention has been described above, the above embodiment merely exemplifies one application example of the invention and does not intend to limit the technical scope of the invention to the specific configuration of the above embodiment. The embodiment can be changed as appropriate within the scope of the technical idea of the invention.
-
-
- 1 continuously variable transmission (hydraulic actuation device)
- 1A continuously variable transmission (hydraulic actuation device)
- 12 case
- 128 insertion hole (opening portion)
- 128A insertion hole (opening portion)
- 16 in-case oil passage
- 41 primary pulley
- 42 secondary pulley
- 43 chain (endless annular member)
- 7B chain guide support shaft (supported member)
- 8B tubular member (support member)
- 8B′ tubular member (support member)
- 9B chain guide (guide member)
- 802 bottom wall portion
- 811 tubular wall portion
- 811 c opening end
- 815 through hole
- 85 oil passage (internal space)
- B bolt (fastening member)
- Lx3 axis line (insertion direction)
- OL lubricating oil
- S1 space
Claims (5)
1. A hydraulic actuation device comprising:
a case;
an oil passage provided in the case; and
a support member provided in the case and configured to support a supported member, wherein
the oil passage includes an opening portion that allows the oil passage to communicate with a space inside the case,
the support member is inserted into the opening portion, and
a communication between the oil passage and the space inside the case is blocked by the support member.
2. The hydraulic actuation device according to claim 1 , wherein
the support member is fixed to the case by a fastening member in a state where a pressing force along a direction in which the support member is inserted into the opening portion of the oil passage is applied.
3. The hydraulic actuation device according to claim 1 , wherein
the oil passage is a lubricating oil passage for supplying lubricating oil.
4. The hydraulic actuation device according to claim 1 , wherein
the hydraulic actuation device is a continuously variable transmission,
the continuously variable transmission includes
a pair of pulleys, and
an endless annular member wound around the pair of pulleys,
the supported member is a guide member that guides the endless annular member, and
the support member supports the guide member.
5. The hydraulic actuation device according to claim 1 , wherein
the support member has a bottomed tubular shape,
a through hole penetrating a side wall of the support member is formed in the side wall,
the support member is inserted into the opening portion of the oil passage from an opening end side, and the through hole communicates with the oil passage, and
oil in the oil passage flows into an internal space of the support member from any one of an opening end and the through hole, and then is discharged to the oil passage from the other of the opening end and the through hole.
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2021-026686 | 2021-02-22 | ||
JP2021026686 | 2021-02-22 | ||
PCT/JP2022/001519 WO2022176474A1 (en) | 2021-02-22 | 2022-01-18 | Hydraulic actuation device |
Publications (1)
Publication Number | Publication Date |
---|---|
US20240110624A1 true US20240110624A1 (en) | 2024-04-04 |
Family
ID=82930832
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US18/264,650 Pending US20240110624A1 (en) | 2021-02-22 | 2022-01-18 | Control device |
Country Status (4)
Country | Link |
---|---|
US (1) | US20240110624A1 (en) |
JP (1) | JP7337473B2 (en) |
CN (1) | CN116888389A (en) |
WO (1) | WO2022176474A1 (en) |
Family Cites Families (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP6004931B2 (en) * | 2012-12-18 | 2016-10-12 | ジヤトコ株式会社 | Oil pipe piping structure |
JP6016766B2 (en) * | 2013-12-17 | 2016-10-26 | 本田技研工業株式会社 | Chain type continuously variable transmission |
JP6160631B2 (en) * | 2015-01-13 | 2017-07-12 | トヨタ自動車株式会社 | Lubricating device for belt type continuously variable transmission |
JP6873853B2 (en) * | 2017-07-14 | 2021-05-19 | ジヤトコ株式会社 | Continuously variable transmission |
-
2022
- 2022-01-18 US US18/264,650 patent/US20240110624A1/en active Pending
- 2022-01-18 WO PCT/JP2022/001519 patent/WO2022176474A1/en active Application Filing
- 2022-01-18 CN CN202280014773.8A patent/CN116888389A/en active Pending
- 2022-01-18 JP JP2023500639A patent/JP7337473B2/en active Active
Also Published As
Publication number | Publication date |
---|---|
JPWO2022176474A1 (en) | 2022-08-25 |
WO2022176474A1 (en) | 2022-08-25 |
CN116888389A (en) | 2023-10-13 |
JP7337473B2 (en) | 2023-09-04 |
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